PMID: 2487505Jan 1, 1989Paper

Improved techniques for measuring the indentation and thickness of articular cartilage

Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
A C Swann, B B Seedhom

Abstract

A review of the techniques previously employed in the indentation and measurement of the thickness of articular cartilage has led to new and improved techniques for performing both measurements. By utilizing high-speed, microcomputer-controlled data logging techniques, simultaneous monitoring of signals from a dynamic load cell and a displacement transducer could be made throughout an indentation test. The position of the indenter as it touched the articular surface could thus be determined automatically by identifying the moment at which a positive change in the load signal occurred. Less accurate and more time consuming techniques previously required for determining the position of the cartilage surface were hence avoided. The apparatus also included a critically damped dashpot which prevented any transient loads being applied to the cartilage. Depths of indentation could be measured to an accuracy of 0.005 mm with a measurement repeatability of 2.14 per cent. By replacing the indenter with a sharp needle, the apparatus was also capable of measuring the undeformed thickness of cartilage. An accuracy of +/- 0.012 mm could be achieved with a measurement repeatability of 1.2 per cent. The apparatus is particularly suited to surv...Continue Reading

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Citations

Mar 24, 1999·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·J R FoyM LaBerge
May 26, 2006·Journal of Dental Research·E TanakaK Tanne
Jul 27, 2006·Obesity Reviews : an Official Journal of the International Association for the Study of Obesity·S C WearingA P Hills
Aug 12, 2014·Connective Tissue Research·Hyeon LeeR Reid Hanson
Jan 1, 1997·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·D E Shepherd, B B Seedhom
Aug 11, 2007·Journal of Biomedical Materials Research. Part a·Eiji TanakaKazuo Tanne
Nov 4, 2008·Biomedizinische Technik. Biomedical Engineering·Wolfgang KoellerMartin Russlies
Jul 21, 1999·Journal of Biomechanical Engineering·A A Goldsmith, S E Clift
Apr 28, 2001·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·R W Mann
Mar 17, 2000·Brazilian Journal of Medical and Biological Research = Revista Brasileira De Pesquisas Médicas E Biológicas·S M MalmongeW D Belangero
Mar 1, 1993·Journal of Investigative Surgery : the Official Journal of the Academy of Surgical Research·M LaBergeC H Rivard
Feb 24, 2004·Medical & Biological Engineering & Computing·P A ObergA Johansson
Feb 27, 2008·Journal of Biomechanical Engineering·M Singh, M S Detamore
Jun 6, 2009·BMC Musculoskeletal Disorders·Geoffrey R FulcherDuncan E T Shepherd
Feb 12, 2013·Foot & Ankle International·Olaf BuettnerVictor Valderrabano
Aug 29, 2013·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Benjamin Pearson, Daniel M Espino
Oct 8, 2008·Archives of Orthopaedic and Trauma Surgery·Kuen Tak SuhJung Sub Lee
May 15, 2007·Clinical Orthopaedics and Related Research·Allan A YoungChristopher B Little
Oct 18, 2005·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·M A Sweigart, K A Athanasiou
Apr 12, 2005·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·S C ScholesN Smith
Jan 1, 1996·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·H Forster, J Fisher
Jul 1, 2006·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·L WangK Athanasiou
Feb 1, 1992·Journal of Biomedical Materials Research·M LaBergeC H Rivard

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